01·Course Characteristics
Prepare for a grueling test of endurance through the arid landscapes of San Juan, where intense desert heat, gusty canyon winds, and rolling elevations challenge your pacing and thermal management.
There's still hope!
The ideal build for this course is 24 weeks, and you have 15. We'll compress the essentials into your remaining time, prioritizing the demands that matter most on this course to get you to the finish line.
02·Course by Section
A clear freshwater swim in the Ullum Reservoir surrounded by arid Andean foothills. Water is typically calm in the early morning but can develop a light chop if the breeze picks up early.
A scenic yet brutal ride crossing spectacular dams with continuous rolling climbs and fast descents. The relentless sun and dry desert winds will test your aerodynamics and mental fortitude.
A multi-loop city course with virtually zero shade, exposing you to the intense afternoon heat. Energetic local crowds provide a boost, but the dry mountain air accelerates dehydration.
03·AVG beginners' Training Timeline
This 24-week progressive plan prepares you step-by-step for the unique dry heat, climbing, and wind of San Juan. By systematically layering aerobic volume, rolling climbing power, and targeted heat adaptation, you will arrive at the start line confident, resilient, and ready to conquer the desert.
Aerobic Base Build
Develop a strong aerobic foundation and swimming endurance in neutral conditions.
Strength & Rolling Power
Build muscular endurance and climb-specific power to prepare for the 1400 m bike elevation.
Heat & Specific Build
Incorporate sustained race-pace intervals while starting initial heat-adaptation protocols.
Peak & Simulation
Execute course-specific simulation blocks combining wind-resistance riding with brick runs.
Taper & Sharpen
Reduce volume to shed cumulative fatigue while maintaining short, high-intensity efforts to stay sharp.
Adapts to your fitness, schedule & recovery every week.
Personalize this timeline04·Race-Day Execution
Expect dry desert heat reaching up to 31°C with intense UV exposure. Use ice and cold water at every aid station to lower your core temperature, and apply sweat-resistant SPF 50+ before the start and at T2.
Due to the extremely dry air, sweat evaporates instantly, masking fluid loss. Target 800 to 1000 ml of fluid containing 800 mg or more of sodium per hour, alongside 80 to 90 grams of carbohydrates to sustain performance.
Hold back on the rolling climbs of the bike course, keeping your intensity strictly capped to save your legs for the run. Start the marathon at a conservative pace, utilizing a run-walk strategy if the heat spikes.
Opt for a highly ventilated aero helmet and light-colored, full-zip tri suit to assist with heat management. Choose a mid-depth front wheel to maintain stable bike handling in gusty crosswinds.
You can expect the water temperature in the Punta Negra dam to range between 19°C and 22°C (66°F to 72°F), making it highly likely to be a wetsuit-legal swim. The 3.8-kilometer swim features a rolling start format, where athletes self-seed based on their projected finish times to ensure a smooth, safe flow into the water. This pristine, freshwater reservoir offers excellent visibility and calm conditions surrounded by the Andes foothills.
The bike course in San Juan is challenging and demanding, featuring an accumulated elevation gain of approximately 1,200 meters (3,937 feet) over the 180-kilometer distance. You will tackle a rolling profile that climbs through the scenic Quebrada de Zonda and along the Punta Negra dam. Proper pacing and gear selection are crucial, as the high desert altitude and potential headwinds can amplify the difficulty of these climbs.
The 42.2-kilometer run is a flat, fast multi-loop course that winds through the historic heart of San Juan and its scenic parkways. Unlike the hilly bike segment, the run terrain is highly runnable with minimal elevation changes, allowing you to establish a steady, consistent rhythm. However, because there is very little natural shade along the streets, managing your hydration and core temperature will be key to a strong finish.
San Juan features an arid, high-desert climate, which brings warm daytime temperatures averaging 28°C to 32°C (82°F to 90°F) and very low humidity in early November. While the mornings are crisp and comfortable, the afternoon sun can be intense, and dry wind gusts are common on the bike course. Staying ahead of your electrolyte and fluid replacement from the very start of the race is essential to combatting these dry conditions.
It is highly recommended that you arrive in San Juan at least 3 to 4 days prior to the November 1st race date. This window gives you ample time to adjust to the dry desert air, complete your athlete check-in, and attend the mandatory athlete briefings without rushing. Additionally, arriving early allows you to perform a practice swim in the reservoir and scout the key climbs on the bike course.
Your Personalized Plan
FE26 builds your plan around your Strava data, your real schedule, and the exact demands of IRONMAN San Juan — then adapts every week to how you actually perform.
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